LECTUKE VII. 



MARCH 6, 1868. 

 THE BLOOD. 



Fibrine Its fibrill Compared with mucus, and connective tissue Homogeneous 

 condition. 



Red blood-corpuscles Their nucleus and contents Changes of form Blood-crys- 

 tals (Haematoidine, Haemine, Hsematocrystalline). 



Colourless blood-corpuscles Numerical proportion Structure Compared with pus- 

 corpuscles Their viscosity and agglutination Specific gravity Crusta granu- 

 losa Diagnosis between pus-, and colourless blood-corpuscles. 



I INTEND to lay before you to-day, gentlemen, some 

 further particulars with regard to the history of the blood. 



I concluded my last lecture by impressing upon you 

 the necessity of localizing the different dyscrasiaB ; em- 

 ploying the term localize, not in its ordinary sense, as 

 the dyscrasiae have heretofore been considered as local- 

 ized, but rather in a genetical meaning, in accordance 

 with which we constantly refer the dyscrasiaB to a pre- 

 existing local affection, and regard some one tissue as 

 the source of the persistent changes in the blood. 



If now we consider the different dyscrasi* with regard 

 to their importance and their source, two great categories 

 of dyscrasic conditions may at the very outset be distin- 

 guished, according namely as the morphological elements 

 of the blood become changed, or the deviation is more 

 of a chemical one, and seated in the fluid constituents. 



Among these latter, it is the fibrine, which, in conse- 



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